I struggled quite a lot with this. I want to do everything, learn everything thus I ended up mastering nothing.

I've learned to play few instruments in last four years so I can jam with people but I still feel it's not enough.

As I got older I started to value relationships much more and overall became a happier person.

But still the knowledge that I never be a skilled doctor, physicist, exceptional chef, biologist, blacksmith, economist, successful entrepreneur and many more will still somehow hunt me.

I highly recommend the book Four Thousand Weeks by Oliver Burkeman to help cope with this anxiety